From an animal behaviorist and dog enthusiast comes an adorable and informative guide to understanding how our canine friends see the world based on the #1 New York Times bestselling phenomenon, Inside of a Dog—now adapted for a younger audience!

Twins Mark and Scott discover an abandoned Apollo command module and take off to rescue a stranded Russian cosmonaut in the second Astrotwins adventure from retired NASA astronaut and the #1 New York Times bestselling author of Mousetronaut, Mark Kelly.